How much did PRAX move each index today?
XBI: PRAX moved −1.40% and contributed −0.03 points against the index's +4.46-point move, offsetting 1% of it, ranking #154 of 154 members by contribution to the move.
PRAX closed the 2026-10-09 session at 259.86; that day's move sits in the 35th percentile of its own past year. The stock is 32.7% below its 52-week closing high and −11.8% for the year so far.
PRAX in the XBI beyond today
| window | PRAX return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −12.06% | −0.26 pts | −0.68 pts | #2 of 157 |
| 1 month | −23.25% | −0.58 pts | −3.07 pts | #2 of 157 |
| quarter to date | −10.77% | −0.24 pts | −3.93 pts | #4 of 157 |
| year to date | −11.83% | −0.80 pts | +31.82 pts | #152 of 157 |
Who moved with and against PRAX today?
On PRAX's side of the XBI tape: MDGL (−0.02 pts), PURR (−0.02 pts), SRPT (−0.02 pts). Pulling the other way: MRNA (+0.45 pts), IOVA (+0.23 pts), PCVX (+0.19 pts).
Every member's contribution, top to bottom, is on the index dashboards; the day's story is in the market-close note. Machine-readable figures for this stock: /api/stock/PRAX, free to cite with attribution.